Burner for sawdust or refuse fuel



(No Model.)

. R. H. NOGAR.

BURNER FOR SAWDUST 0R REFUSE FUEL.

No. 503,328. Patented Aug. 15,1893,

UNITED STATES PATENT OFFICE.

RUSSELL II. NOGAR, OF DUNDEE, MICHIGAN, ASSIGNOR OF ONE-HALF TO BARNET E. BULLOCK, OF TOLEDO, OHIO.

BURNER FOR-SAWDU SPECIFICATION forming part of Letters Patent No. 503,328, dated August 15, 1893.

Application filed August 13, 1892. Serial No. 442.995. (No model.)

To all whom it may concern.-

Be it known that I, RUSSELL Iii. Noenn, of Dundee, county of Monroe, and State of Michigan, have invented certain new and useful Improvements in Burners for Sawdust or Refuse Fuel; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and

to the figures of reference marked thereon, which form part of this specification.

My invention relates to a burner for utilizing saw-dust, shavings, comminuted coal, &c., in combustion, and has especial reference to the use of refuse matter as fuel in furnaces, especially such as are employed under boilers.

The object of the invention is to provide a burner that shall be adaptable for the purposes named, and that shall be inexpensive of construction, and composed of parts that shall be convenient to cast in molds, and

easily assembled to form a complete burner.

A further object is to provide means for revolving the burner to remove the ashes and dbris incident to combustion of refuse mat ter.

A further object is to provide means for supplying atmospheric air to the burner in the proper position, and quantity to support combustion, and agitate the granular fuel to prevent the same from compacting to a de gree to prevent combustion.

The invention consists in the parts, and combination of parts hereinafter described and pointed out in the claims.

In the drawings: Figure 1 is a longitudinal vertical sectionalelevation of a furnace, supplied with one of my improved burners, in use beneath a boiler, showing the adjustable hopper for regulating the feed to the burner. Fig. 2 is a longitudinal vertical sectional view of the burner the front half being removed to more fully disclose the interior construction.. Fig. 3 is a sectional detail view of a portion of the burner, this View being intended to illustrate the relations that exist between the sections of which the burner is constructed Fig. 4: is a sectional elevation of the upper section of the burner and journal,

showing also the squared portion, and wrench or key in place for revolving the burner. Fig. 5 is a detail sectionalview of the revoluble annular support for the hopper, showing the inclined ways for raising or lowering the same.

1 designates the grate bar of an ordinary furnace, upon which is placed the burner 2, surmounted by a hopper 3, suspended in an annular support 4, having an inclined way 4 upon which lugs 3' of the hopper rest, by which means the feed of the burner is regulated, the increased or diminished space between the hopper and apex of the burner, caused by the upward or downward movement of the hopper, determining the amount of fuel fed thereto.

The burner is composed of a series of corrugated rings 5, the lower of the series being of greater diameter, and in the form of a truncated cone, the base having projecting therefrom curved arms 6, hollow upon the interior and perforated throughout their lengths. Each section of the burner from the base section is conical shape and of less diameter than the one upon which it rests, whereby the sections when assembled form a cone in which the curves of the corrugations intersect, thereby forming concentric rows of openings 7 in alternate vertical alignment through which the upward current of air from the furnace finds exit, and thereby lightens, and revolves the fuel in its gravitating course from the apex to the base of the cone. Each section of the burner is formed with a lug 8 upon its interior upper side, with which a hook 9 formed upon the interior lower side of the succeeding section engages, thereby suspending the several sections in close assembled order upon a central journal 10, formed with a cylindrical portion 11 journaled in a circular recess 12, formed in a central standard 13, the upper end of the journal being formed with a squared portion 14, which projects through a rectangular opening in the upper section of the burner a sufficient distance to receive a wrench or key 15 by which to revolve the entire burner.

In operation, the parts being assembled, as shown in Figs. 1 and 2, an initial fire is started upon the grate bars, when the saw-dust, shav- IOO ings,'comminuted' coal, or analogous refuse fuel is fed to the apex of' the burner, in a quantity determined by the position of the hopper 3, which is either raised or lowered with relation to the apex of the burner by the revolution of the annular support, to'cause the lugs 3 to ride either upwardly upon the Wings to increase the'space between the hopper and. burner, or downwardly to decrease, the space, and gravitates toward the base of the burner, igniting in its descent and is consumed. The current of air received Within the interior of the burner findsegress through openings 7, and not only prevents the fuel from passing through the openings but supports combustion of the same. In the descent of the fuel, any quantity that falls upon the armsG is rapidly consumed, by reason of the current of air ascending through theperforations, which lightens the fuel in its tendency to compact, thereby allowing the flame topass through the same. The primary object of the arms 6 is to free the grate bars or ashes, cinders, &c., which is accomplished by revolving the greatest'diarneter of the burn-erand' the entire burner by means of a wrench 'or key 15, thereby causing the arms to sweep the bars free from deposit for-a radius equal to projecting arms.

- It will be understoodthat by constructing the burner of the conical sections I' am en-' abled to readily wi'thdraw'the same from the sand in casting, thereby reducing the ex-'-' pense.

Another feature of" great value in the'construction shown, is the fact that the burner may be adapted to furnaces of anysize as the height'and diameter'lnay be determined by the number of sectionsemployed.

- Another advantage is that should one section, by reason otbei'ng'subjected to more intense heat than the others become warped or burned, it can be removed, and a new one substituted therefor.

'11; will be apparent that I may arrange the burner to revolve but the lower section With the projecting arms is desired.

What I claim is- 1. A burner for sawdust and the like, conical in shape, and composed of a series of corrugated truncated conical sections, arranged one above the other, the corrugations alternating, providing a series of non-aligning airpassages. W W

2. In a burner for saw dust and the like, the combination wi'th" a -grate, of-a cone shaped bu'rner,-revoli1'bly arranged thereon; and the wings formed uponth'e lowerportion of the cone shaped burner, to clear the grate when said bu'rner'is revolved. I

3. In aburnerforsaW-"dust'and the like, the combination of a grate-of a 'stan'da'rd thereon-a cone shaped burner journaled'upon the said stan'dard and adaptedto berevolved b akey. V

4. An improved burner, conical in shape and composed of-a series of: tapering ring sections, each section having an interior-pin and hook whereby the said ringsection's are connected with "one another.

In testimony'that' I claim the foregoing as my own l he'reby'affix my signature :in pres- 'ence of two witnesses.

RUSSELL H. NOGAR.

1 VVi'tnesses:

WILLIAM WEBSTER, CARROLL J. WEBSTER. 

